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Consider the 10 data points at the top of the next column.
a. Plot the data on a scattergram.
b. Calculate the values of r and r2.
c. Is there sufficient evidence to indicate that x and y are linearly correlated? Test at the α = .10 level of significance.
d. Calculate Spearman's rank correlation rs.
a bank has kept records of the checking balances of its customers and determined that the average daily balance of its
Suppose that the heights of adult women in the United States are normally distributed with a mean of 63.5 inches and a standard deviation of 2.4 inches.
Construct a 90% confidence interval for the above data Be sure to interpret this confidence interval in the context of this setting. State the null and alternative hypotheses in words and symbols. Compute the test statistic
suppose a bar buys 10 of these sony tvs what is the probability that the average life time of the bar's tv is less than 19,650 hours.
The probability that the speed will be more than 70 words per minute is 0.15. Find the mean and the standard deviation of typing speed.
Given that she scores 575 on the GMAT test, what is posterior probability that she will complete her MBA
a project has the following cash flows. what is the internal rate of return? year 0 1 2 3 cash flow -121000 68150 42200
why is a z-score range -3 to 3? if a normal distribution is not assumed can a z-score still be used? why or why
Develop a 99% confidence interval for the population mean household income, assuming a normal distribution.
Find an example of a study in which the issue of association and causation is present. This can be either an example in which association is confused with causation or an example in which the association is not confused with causation.
Calculate a 95% upper confidence bound on the mean. Compare this bound with the upper bound of the two-sided confidence interval and discuss why they are different.
Determine the expected market return on $ 20,000 if the expected return on asset is 20%, its beta is 1.5, and the risk free rate is 5 percent?
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